中国物理B ›› 2013, Vol. 22 ›› Issue (10): 104101-104101.doi: 10.1088/1674-1056/22/10/104101

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Flat lenses constructed by graded negative index-based photonic crystals with tuned configurations

晋蕾a, 朱清溢a, 付永启a, 鱼卫星b   

  1. a School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China;
    b State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
  • 收稿日期:2012-11-20 修回日期:2013-03-06 出版日期:2013-08-30 发布日期:2013-08-30
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11079014, 61077010, 90923036, and 60977041) and the 100-Talent Program of the Chinese Academy of Sciences.

Flat lenses constructed by graded negative index-based photonic crystals with tuned configurations

Jin Lei (晋蕾)a, Zhu Qing-Yi (朱清溢)a, Fu Yong-Qi (付永启)a, Yu Wei-Xing (鱼卫星)b   

  1. a School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China;
    b State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
  • Received:2012-11-20 Revised:2013-03-06 Online:2013-08-30 Published:2013-08-30
  • Contact: Fu Yong-Qi, Yu Wei-Xing E-mail:yqfu@uestc.edu.cn;yuwx@ciomp.ac.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 11079014, 61077010, 90923036, and 60977041) and the 100-Talent Program of the Chinese Academy of Sciences.

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摘要： Flat lenses are designed by means of graded negative refractive index-based photonic crystals (PCs) constructed using air-holes tuned with different shapes. By gradually modifying the filling factor along the transverse direction, we obtain the graded negative index-based lenses for the purpose of focusing an incident plane wave. The finite-difference and time-domain (FDTD) algorithm is adopted for numerical calculation. Our calculation results indicate that these lenses can finely focus incident plane waves. Moreover, for the same size of air-holes, the focusing properties of the lens with rectangular air-holes are better than those with the other shaped air-holes. The graded negative index PCs lenses could possibly enable new applications in optoelectronic systems.

关键词: photonic crystals, graded negative index, focusing, flat lenses

Abstract: Flat lenses are designed by means of graded negative refractive index-based photonic crystals (PCs) constructed using air-holes tuned with different shapes. By gradually modifying the filling factor along the transverse direction, we obtain the graded negative index-based lenses for the purpose of focusing an incident plane wave. The finite-difference and time-domain (FDTD) algorithm is adopted for numerical calculation. Our calculation results indicate that these lenses can finely focus incident plane waves. Moreover, for the same size of air-holes, the focusing properties of the lens with rectangular air-holes are better than those with the other shaped air-holes. The graded negative index PCs lenses could possibly enable new applications in optoelectronic systems.

Key words: photonic crystals, graded negative index, focusing, flat lenses

中图分类号:  (Electromagnetic wave propagation; radiowave propagation)

  • 41.20.Jb
42.25.Bs (Wave propagation, transmission and absorption) 42.70.Qs (Photonic bandgap materials)